Title:
> Creatine promotes cancer metastasis through activation of Smad2/3
Tldr is basically that creatine helps body cells (in rats) to grow. Regardless wherever they're bad (cancer) or good (muscle). At least that's how I understood that study the last time I came across it. So probably stop using creatine when you've a cancer that's growing. Or its liable to use the creatine to turbocharge it's growth
> …and support the use of creatine supplementation as a strategy to augment DC-based cancer immunotherapy.
So it seems that from this research the outcome is indeed creatine = good
Creatine uptake promotes dendritic cell activation and enhances antitumor immunity